US6027225AExpiredUtility

Battery powered light having solar and inductive charging means

Priority: Dec 24, 1997Filed: Dec 24, 1997Granted: Feb 22, 2000
Est. expiryDec 24, 2017(expired)· nominal 20-yr term from priority
Y10S136/291F21V 23/02F21W 2131/401F21S 9/037F21S 8/00
82
PatentIndex Score
76
Cited by
6
References
3
Claims

Abstract

A Battery Powered Light Having Solar and Inductive Charging Means for providing a rechargeable, water-proof light unit for use in fish ponds, swimming pools and the like. The light unit may additionally be hung to decoratively add to the surrounding ambiance. The device includes a rechargeable electrical power source disposed within a hollow, light transmissive housing having an open top portion, a cover releasably and sealably attachable to the open top portion, a light source disposed within the housing and operatively coupled to the rechargeable electrical power source, and a solar cell array disposed upon the cover and operatively coupled to the rechargeable electrical power source. A voltage divider circuit including a resistor and a cadmium sulfide cell disposed on the cover is operatively coupled to the light source to provide for selective energizing and de-energizing of the light source.

Claims

exact text as granted — not AI-modified
What is claimed as being new and desired to be protected by Letters Patent of the United States is as follows: 
     
       1. A self-contained solar powered light powered by a rechargeable electrical power source comprising: a hollow, light transmissive housing having an open top portion, a cover releasably attachable to the open top portion, a bottom portion, the bottom portion having an inner surface, and wherein the rechargeable electrical power source is releasably attachable to the inner surface;   a light source disposed within the housing, the light source being operatively coupled to the rechargeable electrical power source;   a solar cell array operatively coupled to the rechargeable electrical power source, the solar cell array being disposed on the cover;   a circuit means responsive to ambient light for selectively energizing and de-energizing the light source, the circuit means responsive to ambient light for selectively energizing and de-energizing the light source being disposed on the cover, the circuit means responsive to ambient light for selectively energizing and de-energizing the light source further comprising a voltage divider comprising a resistor and a cadmium sulfide cell operatively coupled to a transistor switch, the transistor switch being operatively coupled to the light source; and   wherein the rechargeable electrical power source is disposed within the housing.   
     
     
       2. The self-contained solar powered light of claim 1, wherein the housing is cylindrical and the bottom portion further comprises a convex portion. 
     
     
       3. The self-contained solar powered light of claim 2 further comprising a charging means for inductively charging the rechargeable electrical power source, the charging means comprising a secondary coil operatively coupled to the rechargeable electrical power source through a rectifier and a primary coil operatively coupled to a transformer, the secondary coil and rectifier being disposed within the housing and the primary coil and transformer being disposed within a charging cradle, the housing being receivable within a charging cradle receiving portion in such manner that the primary and secondary coils are alignable in parallel for maximum flux linkage.

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